mirror of
https://github.com/thegeeklab/ansible-later.git
synced 2024-11-18 02:40:40 +00:00
61 lines
2.5 KiB
Python
61 lines
2.5 KiB
Python
|
# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
|
||
|
|
|
||
|
|
"""Imposter encodings module that installs a coverage-style tracer.
|
||
|
|
|
||
|
|
This is NOT the encodings module; it is an imposter that sets up tracing
|
||
|
|
instrumentation and then replaces itself with the real encodings module.
|
||
|
|
|
||
|
|
If the directory that holds this file is placed first in the PYTHONPATH when
|
||
|
|
using "coverage" to run Python's tests, then this file will become the very
|
||
|
|
first module imported by the internals of Python 3. It installs a
|
||
|
|
coverage.py-compatible trace function that can watch Standard Library modules
|
||
|
|
execute from the very earliest stages of Python's own boot process. This fixes
|
||
|
|
a problem with coverage.py - that it starts too late to trace the coverage of
|
||
|
|
many of the most fundamental modules in the Standard Library.
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
import sys
|
||
|
|
|
||
|
|
class FullCoverageTracer(object):
|
||
|
|
def __init__(self):
|
||
|
|
# `traces` is a list of trace events. Frames are tricky: the same
|
||
|
|
# frame object is used for a whole scope, with new line numbers
|
||
|
|
# written into it. So in one scope, all the frame objects are the
|
||
|
|
# same object, and will eventually all will point to the last line
|
||
|
|
# executed. So we keep the line numbers alongside the frames.
|
||
|
|
# The list looks like:
|
||
|
|
#
|
||
|
|
# traces = [
|
||
|
|
# ((frame, event, arg), lineno), ...
|
||
|
|
# ]
|
||
|
|
#
|
||
|
|
self.traces = []
|
||
|
|
|
||
|
|
def fullcoverage_trace(self, *args):
|
||
|
|
frame, event, arg = args
|
||
|
|
self.traces.append((args, frame.f_lineno))
|
||
|
|
return self.fullcoverage_trace
|
||
|
|
|
||
|
|
sys.settrace(FullCoverageTracer().fullcoverage_trace)
|
||
|
|
|
||
|
|
# In coverage/files.py is actual_filename(), which uses glob.glob. I don't
|
||
|
|
# understand why, but that use of glob borks everything if fullcoverage is in
|
||
|
|
# effect. So here we make an ugly hail-mary pass to switch off glob.glob over
|
||
|
|
# there. This means when using fullcoverage, Windows path names will not be
|
||
|
|
# their actual case.
|
||
|
|
|
||
|
|
#sys.fullcoverage = True
|
||
|
|
|
||
|
|
# Finally, remove our own directory from sys.path; remove ourselves from
|
||
|
|
# sys.modules; and re-import "encodings", which will be the real package
|
||
|
|
# this time. Note that the delete from sys.modules dictionary has to
|
||
|
|
# happen last, since all of the symbols in this module will become None
|
||
|
|
# at that exact moment, including "sys".
|
||
|
|
|
||
|
|
parentdir = max(filter(__file__.startswith, sys.path), key=len)
|
||
|
|
sys.path.remove(parentdir)
|
||
|
|
del sys.modules['encodings']
|
||
|
|
import encodings
|